John Chrysostom

"For your obedience is come abroad unto all men."

This he does, not to leave them free to be shameless, but to win them beforehand with encomiums, and the number of his witnesses, to arrest their attention. For neither is it I alone that am the witness, but the whole world. And he does not say for your understanding, but, "your obedience:" that is, their compliance, which was evidence of much meekness in them. "I am glad therefore on your behalf." And this is no small encomium too. Then, after the praise, admonition. For lest, after liberating them from any charges against them, he should make them the more listless, as not being observed; he gives them another hint in the words,

"I would have you wise unto that which is good, and simple concerning evil."

You see then how he attacks them again, and that without their suspecting it. For this looks like intimating that some of them were apt to be led astray.